RFR: 8185525: [Event Request] Add Tracing event for DictionarySizes

[gerard ziemski]

On 4/10/19 5:01 PM, coleen.phillimore at oracle.com wrote:
>
> http://cr.openjdk.java.net/~gziemski/8185525_rev5/src/hotspot/share/utilities/tableStatistics.cpp.html
>
> Sorry I didn't notice this before but these constructors should have 
> initializers like:
>
>    31 TableRateStatistics::TableRateStatistics() {
>    32   _added_items = 0;
>    33   _removed_items = 0;
>    34
>    35   _time_stamp = 0;
>    36   _seconds_stamp = 0.0;
>    37   _added_items_stamp = 0;
>    38   _added_items_stamp_prev = 0;
>    39   _removed_items_stamp = 0;
>    40   _removed_items_stamp_prev = 0;
>    41 }
> Should be:
>    31 TableRateStatistics::TableRateStatistics() :
>    32   _added_items(0), _removed_items(0), _time_stamp(0), etc. {}
> Kim could tell you why this is better but he's on vacation.

Done.

I also went back to src/hotspot/share/jfr/periodic/jfrPeriodic.cpp and 
changed TableEventFiller::fill() to be static, since we don't actually 
need an instance of TableEventFiller to do its job.

webrev: http://cr.openjdk.java.net/~gziemski/8185525_rev6


cheers